Adjustable knife and jaw for pliers.



C. O'REARDON ADJUSTABLE KNIFE AND .IAW FOR PLIERS. APPLICATION FILED 1Au.19,1918.

1,276,256. Patented Au 20, 1918'.

awoemboz muW I in the art thus prolonging the 7 CHARLES oREARDoN, on PHILADELPHIA ,-PENNSYLVANIA.

f ADJ STAB EKNIFE nivnaaw Fen PLIEns.

To all whom it may concern: Be 1t known that I, CHARLES OREARDON, a

citizen of the United States, residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements in Adjustable Knives and Jaws for Pliers; and do hereby declare the followingto be a full, clear, and exact description of the invention, such as will enable others skilled to which it appertains to make and use the same, the accompanying drawings, andto the letters and figures of reference marked thereon, which form a part of this specification.

This invention relates to newand useful improvements in adjustable knife and jaw for pliers and consists in the provision of means whereby the knife upon the pliers may be removed and replaced with others,

life of the device. In the use of cutting pliers it is found that the inner ends of the cutting edges, where.

reference marked thereon, form a part of this specification and in which:

Figure 1 is a side elevation showing the pliers made in accordance with my inventlon.

Fig. 2 is a sectional view on line Fig. 1.

Fig. 3 is a sectional view on line 33 of Fig. 1.

Fig. 4 is a view the knife removed, and

Fig. 5 is an enlarged of one of the cutter plate. r r

Reference now being had to the details of the drawings by letter:

A and B designates two jaws of the pliers, each having a shank portion C which are detail perspective knives with integral jaw reference being had to of one of the jaws. with Spe i i i of r ntgPatented Aug. so, 1918. hppl ication filedJanuary 191 13.;- 's ri a n1i21 2.s11;

fpijtotedftogethertat 'a recessed p'or'tion 'E n the 1 16 e. 9 he with a transverse groove H.

The interchangeable knife and jaw plate shown in Fig. 5 is designated by letter K and has a cutting edge N with a shouldered portion N, which is adapted to engage the recessedand shouldered portions E and F respectively ofthe jaw, as shown. Projecting from the rear face of the jaw plate K is a ribQ which, when the device is adjusted in place, engag'esfthe transverse groove H. A set screw T is passed through an aperture in the shank portion of the knife and engages'a threaded aperture in the jaw of the pliers, and aifords means for securely holding the interchangeable knife and jaw plate. When the removable knife and jaw plate is adjusted in place in the manner shown in Fig. 1 of the drawings, it will be noted that the interlocking of the rib with the transverse groove and the end of the inner edge of the shank portion of the knife coming in contact with the shoulder in the jaw of the plierswill hold the jaw plate against jaw is provided any possible movement toward the end of.

the pliers. As the inner edge of the shank portion of the knife bears against the wall of the recess in the jaw of the pliers any lateral movement of the jaw plate and knife will be prevented.

When the knife is'held by the screw to pliers, it will be noted that- 1. In combination with a pair of pliershaving jaws, portion and with integral to engage the each provided with a recessed jaw plate, said knifeadapted recessed portion of the jaw a transverse groove, a knife 1 terminating in -a shoulder worn out it may easily be and the jaw :plate having a transverse rib V for vengagement with said groove, said jaw having a shoulder at the end of the recessed portion, against which the end of the shank portion of the knife is adapted to bear, and

006 eratin with the interlockin roove a I g a:

and rib to prevent the knife from moving against the Wall of the recessed portion of toward the free ends of the jaws of the thejaw, and having ashouider engaging'the' pliers, and means for fastening the knife inner edge of the recess:- of the aw, a set to the jaw. screw passing through the shank portion of 15 5 2. In combination with a pair of pliers the knife and engaging a threaded aperture having jaws, each provided with a recessed in the jaw.

portion and a transverse groove,- a knife Intestimony whereof I hereunto affix my with integral jaw plate having a transverse signature in presence of a witness.

rib upon the face thereof adapted to engage CHARLES OREARDON.

10 said groove in the jaw, the inner edge of the Witness:

shank portion of the knife adapted to bear 7 A; L; HOUGH.

Copies of this patent inay be obtained for five. cents each; by addressing the Commissioner of Patents,

' Washington, D. G. 

